Difference between revisions of "Combustion"
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Students often don't recognise the difference between heating and burning. When asked what happens to a substance when it is heated they will say 'burn' when melting would be a more appropriate response. Students also do not always recognise the necessity of oxygen (or at least air) when things burn. | Students often don't recognise the difference between heating and burning. When asked what happens to a substance when it is heated they will say 'burn' when melting would be a more appropriate response. Students also do not always recognise the necessity of oxygen (or at least air) when things burn. | ||
==Key Stage 3== | ==Key Stage 3== | ||
| − | + | ===Meaning=== | |
| − | + | [[Combustion]] is an [[exothermic]] [[Chemical Reaction|reaction]] that happens when a [[fuel]] burns in the presence of [[oxygen]] releasing [[Thermal Energy|thermal energy]] and [[light]]. | |
Revision as of 12:02, 29 September 2018
Contents
Key Stage 2
Meaning
Burning is a chemical reaction that happens when something catches fire.
About Burning
- Materials can only burn if there is enough air.
- Substances cannot burn underwater or in empty space.
- Anything that burns is called a fuel.
Examples
 |
 |
 |
| A solid fuel burning. | A liquid fuel burning. | A gas fuel burning. |
Note to Teachers
Students often don't recognise the difference between heating and burning. When asked what happens to a substance when it is heated they will say 'burn' when melting would be a more appropriate response. Students also do not always recognise the necessity of oxygen (or at least air) when things burn.
Key Stage 3
Meaning
Combustion is an exothermic reaction that happens when a fuel burns in the presence of oxygen releasing thermal energy and light.